Method of making pneumatic tires.



W. W. DUNCAN & A. N..HOOD.

METHOD OF MAKING PNEUMATIC TIRES.

APPLIOATION FILED AUG.22, 1910.

Patented Feb. 6;

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lfive nfarsw W C WHZzLaJn T/i/T Dunccuy? Artiz ur JV. 0 1 0063 fi W Mm pax tlllhll %TATE% FATENT WILLIAM W. DUNCAN,

CHUSETTS, ASSIGNORS METHOD or MAKING- Application To all whom it mayconcern:

Be it known that we, W ILLIAM W. Dun CAN and Amuun N. Hoo citizens ofthe United States, residing at Vl atQItOWII. Massachusetts, and Newton,Massachusetts, respectively, have invented certain ,new and usefulImprovements in Methods of Making Pneumatic Tires, of which thefollowing is a specification,

Our present invention relates to a method of making pneumatic tires, andincludes the novel method of procedure hereinafter described andparticularly defined in the apj a tire having integral rubber non-slidding OF WATERTOWN, AND

TO HOOD RUBBER COMPANY, OF BOSTON, MASSACHUSETTS.

Specification of Letters Patent.

strip 3 we the According to our invention, we produce j projections ofany desired configuration} ARTHUR N. HOOD, OF NEWTON, MASSA- PNEUMATIGTIRES.

Patented t5, 1%12.

filed. August 22, 1910. Serial No. 578,341.

In forming our improved non-skid tire. we build up the body of the tireupon a ring formed in the usual manner. hctread form upon a rubbercalender of ordinary form (two rolls only of which are snown in part at-4- and 5), having one of its rolls 5 engraved or en'ibossed, asindicated at 5 to give to one surface of the rubber strip produced bythe calender a surface of suitable width having corrugations orprojections. This uncured strip isthen applied to the out r surface'ofthe body of the tire, the ends being overlapped or joined by a beveljoint, after which the tire is put into an open heat to secure theproper vulcanization.

Having thus we claim is:

The herein. described method of manufacturing pneumatic tires-whichconsists in forming a tire body of fabric and uncured rubber, separatelyrolling a strip or band of uncured rubber with an embossed surface,applying said strip or band to the periphery of said body, andthereafter subjecting the tire to the open heat vuleanizingtreatdescribed our invention what without the necessity of an engravedmold. l ment, substantially as described.

In order to illustratethe manner of carrying out our invention, we haveappended hereto an explanatory sheet of drawings, in which Figure 1 is asectional elevation illustrattread surface or st rip to the in testimonywhereof, we afiix our signatures in presence of two witnesses.

WXLTJAM W. DUNCAN. ARTHUR N. HOOD.

Witnesses:

FRANK D. Beams, Amnno A Gm noun.

